Transition characteristics of the dynamic behavior of a vehicle wheel-rail vibro-impact system

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-01-01 DOI:10.3934/era.2023357

Yang Jin, Wanxiang Li, Hongbing Zhang

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引用次数: 0

Abstract

A two-degree-of-freedom vehicle wheel-rail impact vibration system model is developed, and the equivalent impact stiffness and damping of the rail are fitted applying ABAQUS, taking into account the high and low irregularity generated by the welded joints of the rail. A wheel-rail periodic interface with fixed impact was selected as the Poincaré map, and the fourth-order Runge-Kutta numerical method with variable step size was used to solve the system response. The dynamic characteristics of the system are investigated using a combination of the Bifurcation diagram, Phase plane diagram, the Poincaré map, the Time-domain diagram and the Frequency-domain diagram. It is verified that the vehicle wheel-rail impact vibration system has Hopf bifurcation, Neimark-Sacker bifurcation, Period-doubling bifurcation and Boundary crisis, and there are rich and complex nonlinear dynamic behavior changes. The research on the bifurcation and chaos characteristics of vehicle wheel-rail impact vibration systems can provide a reference for improving the stability of vehicle operation in engineering practice as well as the prediction and control of chaos in vehicle vibration reduction design.

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车辆轮轨振动冲击系统动力学特性的过渡特性

& lt; abstract>建立了二自由度车辆轮轨冲击振动系统模型，考虑钢轨焊接接头产生的高低不规则性，应用ABAQUS拟合了钢轨的等效冲击刚度和阻尼;选取固定碰撞的轮轨周期界面作为庞卡罗图，采用变步长四阶龙格-库塔数值方法求解系统响应。采用分岔图、相平面图、庞卡罗图、时域图和频域图相结合的方法研究了系统的动态特性。验证了车辆轮轨碰撞振动系统存在Hopf分岔、neimmark - sacker分岔、倍周期分岔和边界危机，存在丰富而复杂的非线性动力学行为变化。研究车辆轮轨碰撞振动系统的分岔与混沌特性，可为工程实践中提高车辆运行的稳定性以及车辆减振设计中的混沌预测与控制提供参考。& lt; / abstract>

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.